Patch-applying mechanism for window-envelops.



c. o. EKvALL. i mc" APPLYING MEcnANIsM ron wmno-w fuman'.

. Y APPLICATION FILED MOV. 30. I9i5. 1,250,995. f Fatemi Dec. 25,1917.

4 SHEETS-SHEET I.

l/V VENT 0H n by UgNVL/J Anon/vn c. o. EKVALL. PATCH APPLYING MECHANISM FOR WINDOW ENVELOPS.

PPLICATHN FILED NOV- 30. l9|5 I 1,250,995. l Panted Dec. 25,1917.

4 SHEETS-SHEET 3.

` da f 43 1.5.41A Y d? 5317109 /NVENTR Carl 0.2.22Vaj PAQ fr Ammer' c. yu. EKVALL `PATCH AFPLYINQ MECHANISM FDR WINDOW ENYELOPS.

APPLICATION FILED/IGV. 30| 1915.

Patented' Dm 25, 1917.

W4 sains-sain f.

R m W N l WITNESSES:

transparent material STATES PTENT OFFICE.

.ARL 0. EKVAL, OF BROOKLYN, NEW YORK, ASSIGrNOBI '10 GENERAL PAPER GOODS MANUFACTURING CO., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

PATCH-APPLYING MECHANISM FOR WINDOW-ENVELOPS.

Specification of Letters Pactent.

Patented Dee. 25, 19147.

Application led November 30. 1915. Serial No. 64,220.

To all 'whom it'may concern:

Be it known that citizen 'of theUnited States, residing at 8678 Bay Park Way, in the city of New York,- borough of Brooklyn, county of Kings,and State of New York, have invented certain new and Vuseful Improvements in Patch-Applying Mechanism for Window-Envelops, of which the following is a specification.

This invention relates to a machine for manufacturing the wellknownftype of envelop known as'the outlook" or window envelop, wherein an opening is formed in the` body of-the envelop blank and a likey material is secured over the opening so'that the address which -isplaced on the inclosure in such manner as to register with the opening, can readily be seen through the transfer strip placed over the opening.

This machine relates tothe steps in the manufacture of this type of envelop where! in the envelop blank, which has been already formed by other machines or proc esses, is gummed, folded and the patch of applied over the address opening. The object Vof this invention is to simplify the mechanism of a machine of-this type, to produce a machine which will work with greater speed than heretofore, whereby the output will be increased and to eliminate the general step by step features of thc present machines of this character. v i

These and other objects are accomplished by my invention. a more particular description of which will appear below.

Reference is to be had to the accompanying drawings forming part of this application. in which- Figure lis a side elevation of the portion of my improved machine for gulnming the envelop blan is. portions of the same bef in; shown in section;

Fig. 2 is a plan view of the machine, portions of the same being shown in section;

Fig. 3 is a view ot the portions of the machine used for removing the patches from the pile and transporting the same to the I, CARL O. EKVALL, a

strip of plunger which folds the envelop blanks and applies the patches; i

Fig. is an elevation of the mechanism formoving the patch gripper-s to the plunger;

Fig. 5 is a view of the patch holding mea-ns and transporting mechanism for the patches; i

Fig. 6 is a- Sectional view on the line 6-6 of Fig. 5, looking in the direction of the arrOWi Fig. 7 is a side elevation of the grppers;

8 is a plan view of the same;

F1g.'9 is a plan view of an envelop blank;

Fig. 10 is a plan view of theV plunger for creasing the envelop blanks and applying the transparent patches thereto;

Fig. 11 is a sectional view-of the air pump .for the plunger: and

Figs 19., '13, 14 and 15 are diagrammatic views showing the method of operation of the plunger.

have ,shown it herein. I have not embodied "many featuresA of construction peculiarto machines for making envelops. asthevare vwell understood and need no specific de'- scription here for the purpose of making mv invention'clear.

A pile of blanks, as at l, Fig. l. isplaced upon the table or suitable support Q. Above this is a frame 3. In this frame are bear ings 4 in which a rod is carried. This rod 5 is given an up and down movement b v a series ot levers. the inner lever (i being fulcrumed to the upright 7 of the frame. and its other end is pivotallv connected toa link S .which is secured to the rod 5 b v the clamp 9. Mechanism is secured to the levers operated b v al cam or other desired means (not shown) in-the machine` for moving the levers so as to give the rod an 11p-and down movement.

The rod 5 carries a head 10. To this head are pendantlv secured three summing dies or pickers ll. IQ and 13. These dies are each conformed to the shape of the line of shaft 17 located underneath the 'dies 11, 12 and 13, the shaft 17 being sup` Fig. 9.

The gumming rolls` 16 are mounted on a gumming ported to rotate in blocks 18, which blocks ae secured to -rods 19, Fig. 2. Arms 20 are secured to the blocks on the rods and connected with some portion ofA the envelop making machine which will give them a reciprocating movement in the usual way, as indicated by the arrows in F ig. 2.

Located below. the gumming dies 11, 12

. `and 13-and the gumming rollers is a stripper orme shown in plan in F ig. 2. This late is provided with apertures 22 and conforming to the shape of the the under surface of which stripping or removal of from the gumming dies 11,12 and 1'3.. These dies 11, 12 and 13,'on their downward movement, pass through the apertures'122 inthe stripper plate 21, place gum on 'the edges'of the -flaps 24 and 25 of the envelop blank, and adjacent the edges of the opening in the blank, as shown at 15 in blank adheres to' these 12 and 13 and is carried upward on the return movement of said dies, and during such upward movement the blank is brought into contact'wth the stripper plate 21 which ar- .rests its upward movement and frees it from the gumming dies. The flanges 23 act as knife vedges to more effectively 'elfebt thisl separation. As the blank is stripped from the stripper plate, it drops down; onto a. carrier. 26 having at their endsgripping hooks 27. hese arms are adapted toslide or reciproformed on the plate 30, which latter consti- -tutes' the upper horizontal portion of the frame, .which is. called the creasing frame. fThe arms gather by 26 at the rear are-connected toa rod 31, which in turn carries a link 32, and the link 32 is connected by a- 4 lever 33, to a part of the envelop machine which will give 'it an oscillating movement,

producing 'through the before mentioned connections a reciprocating movement of the carrier. The horizontal plate 30 of the creasing frame-is provided with an aperture 34. This aperture is bounded by front and rear `cross plates 35 and by two side plates 36.

gum around the opening previously formed in the b1ank,-such4 as shown at 15 1n suitably dies 11,

This carrier consists of two arms 28 formed in arms 29v 'guides carry a tubular rod 38.

These plates constitute They also form the immediate 'supportfor the envelop blank, at the time the patch hereinafter to be described is applied thereto.

In order to decrease the time-hitherto used in moving the gummed blank from the gumming dies to the folding box, so-called, thereby increasing the output of the machine, and further in order toavoid the use of mechanism involving a dwell or halt, had for the purpose of applying the patch to the blank intermediately of the gumming and folding operations, or in other words, to. eliminate the step by step f ea-ture of the` structures which have been-employed in patch applying appliances prior to my invention', and to produceY a patch applying appliance which is continuous in its operation, I have .evolved 'means for selecting'a single patch from a superimposed pile of patches, carrying them each singly to a plunger which in turn carries them t0 the blank, which has already been .gummed around the opening, so that the creasing plate', as above stated, forms an essential element of4 the folding mechanism, and acts as a support for 'the blank at the instant of the application of the patch to the blank. The close proximity ofthe patch applying mechanism to the gumming mechanism prevents the gum from' drylng or flowing, so that a very muc-h more evenly, and perfectly applied patch resultsl than has heretofore been accomplished in machines in which mechanism has been interposed between the gumming and folding device for applying the patch, v the use of which produces a halt orstep by ste operation in the machine.

he plunger also constitutes an essential and necessary element ofthe mechanism. for foldin v the flaps of the blank, and therefore, a l mechanism interposed between the folding mechanism and the gum applying mechanism is eliminateda'nd the-patch apblank."

In carrying out this part. of my invention,- I provide the frame 3 with guides 37, which This rod is given an up'. and down or reciprocating movement properly timed with respect to the reciprocating movements Vof the rod 5, Fig. 1, and carrier frame, to the end that the movement of the envelop blank from the completion of the gumming operation to the inception of the folding operation will Ibe continuous, and the application of the patch to the blank will be had without any lnterruption of that movement. The tubular rod carries a projection 39 to which is pivoted alink 40, to which is pivoted a lever 41 leading to an appropriate part of the ma,-

an essential element lof the folding mechanism to be described.

chine, which, through its operation, will raise and lower the tubular rod 3S in svnchronism with the other movements heretofore described.

The plunger t3, which forms part of the blank folding and patch appllving mecha msm is shown in section in Figs. l2, 13, ll and l5 which shovtlie varioussteps in the folding and patch applying operation. A

plan view of the plunger is shown in Fig.- l0. d v

The plunger is secured to the lower end of the tubular rod 38 and consists of a suction plate having a recess 4i and a series of holes 45, leading from the recess to a serles of channels or ducts i6, which con nectsaid holes and which extend to the opening LT which ends through the rod 38.

For producing the necessiti-5T suction, a-

pump such as shown in Fig. 1,1 may be used andv suitably connected to the rod 38V so that air will pass through said rod to the plunger, the operation of the pump in no manner interfering with the reciprocating'movementof the rod 38.

' In Fig.3 is shown in detached form the mechanism for lifting a patch from a pile and in Figs. 4, 5, 6, 'i' and 8 is shown the mechanism for conveying the patch to the plunger'. said latter mechanism involving means for drawing the patch over the surface of the suction plate synchronously with the suction movementl of the pump, which effects the flattening or ironing outl ofthe patch so that it will be applied to the envelopblankl in aV perfectlv flat and unwrinkled condition. Such mechanism also includes devices for holding the patch in contact W'th theplunger for al greater por tion of thfldownward movement of the same after it has passedthe creasing plates, the release of the plunger from the applied patch being had'at a predeterminedpoint before the commencement of the operation i Y of final laying down vof the envelop flaps.

The mechanism b v which these various operationseaiid results are secured is substantially 'as'- follows At t8 is a table or support located at one side of the creasing frame and some distance below the level of the creasing frame. This mechanism is primar-il)- supported ontwo brackets 49 and 50, whichv form part of flanges or securing 'plates 5l, These securing plates are provided wit-h slots 53 through which bolts 5l pass securing the brackets to the bed plate iS. This method orsecuring the brackets to the bed plates enables the mechanism supported thereby to be removed or attached as a whole and additionally allows of an adjustment of that mechanism in its entirety laterali;r of the line of movement ot' tluI gummed blank, for a purpose hereinafter to be described. The patches 55, which are of verythm, transas shown in/Fig, G. For raising or lower ing the plate 5G and its superposed patches ,55, I provide the following mechanism:

A recess 62 is formed in the under p0rtion of the bed plate 4S and an aperture G3 extends through the plate 52 above the recess. The racked bar 57 passes through this aperture and into the guiding portion of the guide bar 6l, which is secured beneath the bed plate 52, below the recess 63 and extends through the4 aperture 62, the guide bar having bearings 65 carrying the shaft 66. This shaft 66 is mounted to rotate in a bracket 6i' secured to the edge of the bed plate t8, and is provided with a pinion 66a 'which engages the racked bar 57 and through which the bar is raised or lowered. The sha tt 66 is also provided wit-h a turning knob il at its end. At 69 is a ratchet wheel a 1d at 70 a spring pressed dog which engages with' the teeth in the ratchet wheel. rl`his arrangement permits, b v thev turning of the shaft 66, the'step by step or graduated raising of the table 56 which supports the laver of patches. To lower the patch carrying plate 56, the dog 70 is freed from the ratchet 69, which allowsof the plate being lowered to the desired point. As shown in Fig. 6. the opening in the bed plate 4S is of sufficient dimension to allow bodily adjustment.

The pinion 66a is connected to thel shaft by a feather and spline or an7 like well known means so that the. shaft 66 can move bodily through the bearings in the guide 64 and bracket 6T and the racked bar and parts directly associated with it` mav be moved bodily in the direction of the length of the shaft 66, if desired, when the plates 5l and 52 are adjusted. l Mechanism for lifting a patch from the pile.

The cage 58 is provided with an upright 71, in which is pivoted a collar T2 which carries a tubular rod T3 provided at its forward'end with a downwardly bent and laterally extending nipple Tl provided with a plurality, preferably twoI` holes T5 leading to the Vinterior of the tube. As shown in Fig. 2, this nipple extends crosswise and substantially over the patch 55, and is located adjacent oue end of the same and near the gripper to be described.

The rear end of the tube is supported on a :gro'oved bloem@ puny '76 which Block is slidably mounted upon a shaft 77. This shaft is secured to and extends from one end of a rocker arm 78, the rocker arm being pivoted to a bracket 79 which in turn is secured through its flan e 80 to 4lthe plate 48.` The other-arm o theirockerf78'is t'zon'riected,v

by a connecting rod 81 to the driving mechanism ,ofthe machine'in 'such a.; way' that when the"A rod is pulled.-downward'lathe tubular ma 73 win be aneaewnw'ard-to- Ward and to the topmost of the pile of patches, at which time'thefgripper mechanism to be described is out of the way Ort/ its rearmost point of removal from the op,n erative relationshi with the pile of patches.

`The air in the tu ular rod 73 -is exhausted either by connecting with the` exhausting pump which operates connection with the plunger of the folding operation or may be connected with an exhausting pump operating independently of tlieaforesaid pump,

the exhaustion of air and the release of the suction being synchronized with the operation of the gripping mechanism, as hereinafter described.

A spring 82 is .secured at one end to the I upright 7l and at vthe other end to the rod 73. The return or lifting movement of the connecting rod 81 lowers the grooved block, allowing the spring to tilt the rod 73.' Before this is accomplished, the nipple 74 on the rod 73 has caused one end of one of the nblank and moves it bo patches to become attached thereto, and the action of the spring 82 in tilting the nipple end of the rod, leaves one end of theupatch up, as shown in Figs. 3 and 5, to a height which willl cause its forward edge tolie in patch across the face of the suctionplate under the pressure of the suction, as before described, occurs.

The sleeve 83 carries a link 85 which is in turn connected to a lever 86 in its turn heilig connected with some apertured moving part of the envelop machine which will give it an Oicillatory movement properly timed'A in connection with the gripping action of the gripper mechanism and the sucking action of'the folding plunger.

The sleeve 83 is provided with an arm or projection 87 projecting laterally of the sleeve and out toward the cage 58. The projecting arm has flanges 88. These flanges carry a rod 89 upon which is mounted a. A

, spiralfspring 90, one end o f the spring being secured to one of the 'flanges and the other to the rod, 'the spring closing the up- -per or pivoted arm 91 of the gripper,which arm is fixed onl therod 89.' The lower or fixed` arml 92 of the gripper is secured by 4means of the bentportion 93 tothe arm 87 so as. to lie below the arm 91 .of the gripper` For a. purpose hereinafter tobe described, the lewer' ajm92o f1he;grippler f is provided with a transversely extending apertureV- lthrough which extends avbutton 94;, prefwith a tripperarm 97, which carries a roller 498at'its extremity.

The tripper'arm 97 'has a lug i- The -sleeve 83 carries a'two armed d@ 100 and a plate spring 101 one end of which bears on one end of one of the dog arms., The other pendant arm of the dog is in line with a stop 102 which is adjustably secured to the bracket 50. The bracket 49 carries a stop 103 which extends in the opposite direction. As the-sleeve 83 is moved away from the cage, carrying with it the gripper andattached patch, the patch passes' through the guide plates 101, which guide' plates are secured to lh'e arms 58 ofthe cage a-nd extend toward the plunger underneath the suction plate or recessed portion 44, of the plunger, as belfort` described, and z wlien. the -patch reaches its proper position` in the. recess in the suction-.plate and is held securely there.- on, then. the roller 98 on the trippr arm 9T strikes the curved projection 103 and rotates it downwardly, as in Fig. 4:, which opens the arm 91 lof the gripper and frees the grip The plungerl ping device from the patch.

then descends. At the commencement ot' the downward movement of the plunger, the sleeve 83 begins its movement in the reverse direction, that is, toward the cage, carrying with it the open jaw of the gripper. vThe movements of the plunger and gripper carrying mechanism are so arrdpged .that the lo readily 'uttogetherand adjusted to comv pensate or wear. a In the operation of the machine, as before` described, the patch is not positively guided,"

except when it is moving through theguide plates 104. These guide plates serve to straighten out and aline the atch so that its sides will be as near paralle tothe sides of theopening in the envelop blankas Vmay be.

At two other points in its movement, to vvit,y

lifting'it from the' pile of patches and presentingit to the uideways in the guide plates 104, and a ter it leaves the guide plates, and is drawn alon `the face of the plunger of the 4folding mec anism, the patch as a tendency to become laterally disalined; in other words, there is a tendency for the longitudinal axis' of the patch 'to etiout of alinenientor parallelism 'with Vthe ongitudinal axis .of.its movement, whichwould result .to the opening in the envelopfblank. In order to preserve the proper alinement in the application ofthe patch to the envelop blank,

so that thefed es ofthe' atch will be in substantial para elis'ni wit the edges of'the L `opening l1n the blank, and additionally in Vorder to insure against the patch getting t askew while beingdrawn through the guide plates, ,I` employlthe mechanism shown in detailin Fig. 3 previously described.

The drawing indicates two points of contact of the frame with the patch, one.at the point where 'the lever engages a patch substantially :along the longitudinal center thereof, andthe other at or 'adjacent the inner edge of the patch. This two-point contact will prevent the patch from becoming skewed. The inner contact is a. resilient one, so that the forceful pressure of the finger 91 lieved, thereby avoidingfinjury to the patch, atthe same time preventing the`patch from slipping. y

Also, in the operation of the machine, if the bearin s of the parts immediately con nected -witi the gripping device, especially over the shaft 89, become worn, which has a tendency to disaline the gripping surfaces of the gripper in two or more directions,1the iesiliently controlled gripper compensates for this wear and vmaintains a uniform area of gripping surfaces for the patchi-egardless' of the amount or direction yof the normal wear of the parts.

Figs.` 12, 13, 14 and 15 show the operation in the patchI being misplaced with relation `Within the scope of the'annexed claims.

-of'the gripper againstthe patch will be re-4 of the plunger after it 'has received the atch.

In Fig. 12 it is holding the samein t e re cess 44`by the suction of the pump A shown in Fig. l1. The envelop blank has .been drawn by the arms 26 from underthe gum- 70 ming dies 11, 12 and 13 and rests upon the creasing plate 30 (Fig` 12). In Fig. 1'3 the plunger strikes the envelop blank and forces" the same through the opening 34 therein, so that the fiaps are folded upward. The suction from the pumpstill holds thepatchin'l contact with the suction plate: of the plunger and in Fig-14 the blank is shown forced 4through the'creasing plate 30 so that the -flaps on the envelop blank have been folded upwardly and then the pum reversesoperations and blows out air whic begins to ,force the patch against the Vsurface of the blank and over the openin therein. InFig. 15

the plunger has reac ied the bottom of its movement and forced the'blank yagainst a folding bed 105, 'suitably situated below the creasing plate 30 where 'the sealingfpf the flaps takes place, which operation isy per-` formed byany well known or desired means; Having described my invention, it is ob` vious that the samevis notrestrictedto the .precise embodiment herein shown ibut ,is broad enough to cover all vstructurescoming Whatlclaimiszy 1.In an envelop machine, the combina]- tion with mechanism for giimming Aanl en"-` velop blank, of flap crleaslngmechanisin," of

mechanism .for withdrawing -said gummed Vblank from the gumming mechanism and re- .Vger onto the blank w ien said blank Vreachesthe 'folding bed.

Q. In an envelop machine, the4 combination 110 with mechanism v for gumming an envelop blank, of a creasing plate. of -mechanism'for -f withdrawing saidblaiik from thegumniing mechanism'-andY removing the same to the creasing plate, aplunger forcoperating with tliecrea sing 'plate in creasing the blank,pneu matic means,forlioldinga patch on the plunger and outof contact 'Withthe blank while the creasing operation is performed, said pneumatic means adapted to eject the patch 120 from said plunger onto the blankafter the creasing operation has been completed.

3. In an envelop machine, the combination with mechanism for guinming an envelop blank.. a creasing plate` of mechanism 125 for withdrawing said blank from the guinn'iing mechanism after the gum has been appliedlnndcarrying the same to the creasing plate, a patch table, a recessed plunger. mechanism for moving a patch from said table to the recess in the plunger, pneumatic means for retaining the patch on said plun- 'ger Within the recess formed therein While theplunger, in 4coperatipn yi'ith the creasing plate, creases the blaiik`,"-said pneumatic means ejectin onto the blanr after the creasing' operation has been performed.- '.2 4.- In an envelo tion with mechanism for guminin '.anengumming mechanism after the application Aof the gum to theenvelop blank and transfferring said blank to the creasing'mechanism, a plunger adapted to coperate with said creasing mechanism, mechanism for carryinga patch to said plunger, means for holding a patch on said plunger:A and away from t plying saidvatchl over the'opening in the envelop bla-nl; after the creasing. operation is completed.`

of mechanism i blank, a creasing late, means for transferring said envelop blank to thegfcreasing'.-

tableto the plunger, means ,j connected to plate, a plunger adapted to coperate with said creasing plate, a 'patch table, means 'for transferring al patch from said patch the plunger forretaining thepatChon'Qthe 's plunger and preventing 'same-from contacting' with the surface of the envelop blank while the creasing operation is.in progress,

"and applying said lpatcll to the opening inl-g theenvelop .blank afterthe creasing opera-j '40j .tion is completed.v 1

of'mechanismfor gummingf'and lifting an l6.. In an envelop inachine, the 'combination v envelop blank, a .creasing plate, means for saidcreasing plate, means for lifting a patch separating said blank from the'gumming mechanism, 1grippers for transferring sam envelop blan table, a plunger adapted to coperatewith from Said` table, mechanism for transferring the lifted patch to the plunge r, said plunger "creasing the envelop blanken the creasingplate and then applying said patch to the opening. in said blank when said creasing operation is completed.

In an envelop machine, the combination ""clanism for guniniing and lifting an ing mechanism,means for transferring the venvelopblank to said foldingl mechanism, a patch table, mechanism for lifting a patch from said table, a plunger, means for With- Ad'mwjng said. lift.ed patch and transferring same t0 the under surface of said plunger, said plunger creasing-the envelop blank and blank, means for separating saidnk* from the gumming mechanism after. the guiiiming operation is completed, fold-- the patch fromthe plunger ipatchtable, means for transferring a atcht 'fro'm said table to the under surface o said to the creasingl plate, a patch' fmeaiis also adapted to force the blank.

nasca-a5 appl ing .the patch over the opening in said blan when the creasing operation is coinpleted.,A

8. In an envelop-:'machine, thecombination of meansafor gumming and liftingiian-en'- velop blank, means--for removing'sai'i'blank from the gumming niechai'i'lism, a creasing plate, means for transferring said blaiil'gito! machine, the combina-'- the creasing plate, a plunger having ya r e.

c ess and adapted tg-,fcoperate -With-said velop blank,creasing mechanism, o mechanism for withdrawing said 'blank from the I ing a patch from said table, means-f tion with means for gumming and lifting an e surface of the envelop blank while the same is being creased and means forapblank, means for detaching said en,-

velop creasing mechanism, meansfor transferring "said envelop blank to: the c'reasing'me'cha- Y .Y nism, a plunger adapted to coperate with 5.' In anenvelb lmachin'ejthe combination o f.`gni hming an envelop'- saidcreasing mechanism, a patchtable, mechanism for engaging the end of Said f rltransferring the ummed'envel'op blaii'l I to' saidlifted patch and carrying said patchI` beneath the plunger, means connected to said pluncreasing mec ianisnnia plunger adapted to 'c'gperate With said creasingmchanism, "af

plunger, said plunger having'a recess to receive the patch, pneumatic meansfor retain ing said patch on the surfacelof the plunger AWithin the recess'formed therein and away from the surface of the envelop blank While the plunger vperforms the creasing of the flaps of the envelop blank said pneumatic )atch against the surface of the envelop after the creasing operation is completed.

11. In' an envelop machine, the combination with gummin mechanism for an envelop blank, creasing mechanism, mechanism for transferring the gummed blank-to the'creasing mechanism, a -plunger adapted to coperate with the creasing' mechanism having a recess an I. perforations leading to' said recess, means for causing air suction to pass through said peiforations to support a patch against the top of said recess While the plunger creases the iaps of the envelop 19. ln a machine of the class described, a

'patch table, a creasing plate and a recessed lank plpnger, means for removing a patch from said table to the plunger, pneumatic means for holding. said patch 1n the recess 1n said plunger out of contact with an envelop Y 'lanlr forced through the creasing plate by lunger.

A 1Q In a machine ofthe class described, a plunger having a recess, said recess being of a size to hold a patch, said plunger also having openings extendingthrough it to the re- .-,cess andmeans for producing air suction ,through said openings to cause a patch to be "held-'on the plunger in the recesstherein.

IIn anenvelop machine, the combination with means for gumming an envelop .lblankfmechanism for transferring the gummed envelop blank to creasing mechanism, a

patch table; means for lifting a patch f rom said4 table, a recessed plun er, a carriage mvable'toward the patch ta le, grippers on `:"sa'id'carriage for engaging the lifted patch .fand transferring same to the recess in the plunger and means on the'carriage for re- 4 leasing/the holdiof the rippers on the patchl vvf-when said atch is eneath the plunger whereby sai patch may be received in said recess.

` l5. In an envelop machine, the combina- `tion with means for gumming an envelop blank, means for transferring said blank to .creasing mechanism after the same has been gummed, a patch table, a'recessed plunger,

an air tube for lifting the uppermostof said patches from said patch ta le, a movable carriage, means on said carriage for engaging the lifted .patch and transferring the same. to the plunger where said patch 1s received from the patch carrying means into the recess in the plunger, and means on said carriage for causing the patch'f.,engaging 1 means to disengage theV patch whenthecarmeans for an envelop blank, a patch table,

a plunger lxaL-'ii'zpg a patch -holding recess, a pivoted air tube for lifting' a patch from said table. guides for said, lifted patch, gripcrs passing between the guideslfor engaging said patch and trausferringl'the s ame to the recessv in the plunger. and mechanism for Vcausingthe grippers to disengage the patch when said patch has reached a position beneath the recess m thc plunger.-

1S. In an envelop machine, the combina,-

tion with a plunger having a patch holding recess, a patch table, means for lifting the end of the uppermost patch from said table; guides for the edges of' said patch, a movable carriage, grippers on said carriage for engaging the lifted end of the patch and transferring 'said patch to apomt beneath the recess inthe plunger, suction means in said plunger for causingthe patch to adhere to its under surface in the recess therein and means connected to the grippers for causinA the same to release the patch when engaged by the plunger. .l

1 9.V In an envelop machine, the combination with a plunger having` a patch holding recess, a patch table, a pivoted air tube for lifting the 4uppermost patch' from saidtable,

a carriage movable under said plunger and' havlng a pair of grippers for engaging the lifted patch, means for causing the grippers to engage sald patch. when the carnage has reached a -point'adjacent the patch table,

means for causing thev grippers to release` said patch when the patch has reached a point'below the recess in the plunger 'and means forcauslng airsuction 'to `pass through the plunger for causin the patch to adhere toits under surface Wit in therecess when released by the gri pers.

20. I n` an envelop mac ine, the combina` tion with a patch table, lmeansl -for-lifting a.

patch from said table, a frame, a carriage movable onlsaid frame, grippers on said carriage for engagingthelifted-patch,]a stop adjacent one end of the frame, mechanism yon the carriage for engagement by the sto to cause said grippers to engage the patc a stop adjacent the other end of the .frame for engaging the mechanism on said carmage and causing the grippers to disengage the patch 4and a plunger and means'connected to said plunger for ,causing thevpatch' to adhere to the under surface of-said lplunger when said patch i's released by the grippers.

21. In an envelop machine, the combination With a patch table, means for lifting a` patch from said table, a frame, a carriage movable on said frame, a pair of grippers on said carriage for engaging the lifted patch, a rod pivotally mounted in the carriage, one of said grippers being mounted upon said rod, a stop adjacent one end of the frame, mechanism connected to said pivotal rod for engagement by said stop whereby the grip'y pers are caused to engage' the lifted patch, a stop adjacent the other end of the frame for causing the pivotal rod to -pivot'and separate the grippers Vwhereby the patch carriedby said grippers is released.

Q2. In an envelop machine, the combination with a patch table, mechanism for lifting a patch therefrom, grippers for transferring said patch, one of said grippers having an opening therein, a spring secured to creasing plate,a;` supportbeneath` said creas- A said gripper with a section of yielding material secured to said gripper and extending through said opening whereby a yielding or resilient contact between the grippers is secured. l

23. In an' envelop machine, the combinaation "of, means =forgumming an envelop blank creasin mechanism, means for transferring' said envelop blank from the gumming means to said creasin mechanism, a plunger for creasing sai envelop blank and applying a patch thereto, a patch4 table, 4means for transferring a patch from preure` forced through said plunger afterv the folding operation is conpleted 'causes 'the 'l patch to adhere to the envelop blank.

In an envelop machine, the combination withinechanism for gumming an envelop blank,'arcrea'sing plate, ofmechanisrn for v.carl'vying 'the gummed blankv to 'said -the blank while the creasin' ing plate, a plunger adapted to coperate with the creasing plate, sald plunger haying a patch holding recess, means for transferring a patch tothe plunger, and pneumatic means for `holding said patch on the plunger within `the recess formed therein, said pneumatic means adapted to hold the patch into the recess and out of contact with operation is being performed, and adapte( to force said patch on to the surface of the envelo blank the creasing plate. y

25. In' an envelop machine, a creasing. plate and `a plunger ada-pted'to coperate with the same to crease an envelop blank, a folding bed to which the blank is transferred by the plunger, the plunger haiing a recess for holding a patch, and means for causing air suction'through said plungerto hold the patch in the recess while the blank is being transferred to the folding; bed by the plunger, said 4,means acting to cause the patch to be applied tothe blank when said when said blank reaches the supporteneath blank reaches the folding bed.

Signed at the c it of New York, county of New York, and tate of New York, this A29th day of November,l9l5'.' -v

" CARIlO. EKVALL. 

